:root,[data-theme=dark]{--color-primary: #ba1a1a;--color-primary-light: #e11d48;--color-primary-dark: #881337;--color-primary-glow: rgba(225, 29, 72, .15);--color-ai: #0284c7;--color-ai-glow: rgba(2, 132, 199, .2);--color-mobile: #e11d48;--color-mobile-glow: rgba(225, 29, 72, .2);--color-hci: #8b5cf6;--color-hci-glow: rgba(139, 92, 246, .2);--color-qlda: #f59e0b;--color-qlda-glow: rgba(245, 158, 11, .2);--bg-app: #090d16;--bg-surface: #0f172a;--bg-surface-elevated: #1e293b;--bg-surface-glass: rgba(15, 23, 42, .75);--bg-surface-translucent: rgba(30, 41, 59, .6);--bg-input: #131d31;--border-subtle: rgba(255, 255, 255, .08);--border-medium: rgba(255, 255, 255, .14);--border-strong: rgba(255, 255, 255, .22);--border-glow: rgba(56, 189, 248, .3);--text-primary: #f8fafc;--text-secondary: #94a3b8;--text-muted: #64748b;--text-inverse: #090d16;--text-accent: #38bdf8;--color-success: #10b981;--color-warning: #f59e0b;--color-danger: #ef4444;--color-info: #38bdf8;--bg-card: #0f172a;--navbar-bg: rgba(9, 13, 22, .88);--drawer-bg: rgba(15, 23, 42, .96);--dropdown-bg: #0d1527;--dropdown-shadow: 0 20px 45px -8px rgba(0, 0, 0, .95), 0 0 0 1px rgba(255, 255, 255, .05);--code-bg: #090d16;--code-header-bg: #111827;--card-footer-bg: rgba(0, 0, 0, .2);--week-body-bg: rgba(0, 0, 0, .15);--hover-overlay: rgba(255, 255, 255, .05);--active-highlight: rgba(56, 189, 248, .12);--bg-gradient-1: rgba(30, 58, 138, .12);--bg-gradient-2: rgba(225, 29, 72, .06);--font-sans: "Plus Jakarta Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", monospace;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .3);--shadow-md: 0 4px 12px -1px rgba(0, 0, 0, .4), 0 2px 6px -1px rgba(0, 0, 0, .2);--shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, .5), 0 4px 10px -2px rgba(0, 0, 0, .3);--shadow-glow-primary: 0 0 25px rgba(225, 29, 72, .25);--shadow-glow-cyan: 0 0 25px rgba(56, 189, 248, .25);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 24px;--radius-full: 9999px;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-normal: .25s cubic-bezier(.4, 0, .2, 1);--transition-smooth: .35s cubic-bezier(.16, 1, .3, 1)}[data-theme=light]{--bg-app: #f8fafc;--bg-surface: #ffffff;--bg-surface-elevated: #f1f5f9;--bg-surface-glass: rgba(255, 255, 255, .85);--bg-surface-translucent: rgba(241, 245, 249, .8);--bg-surface-glass: rgba(255, 255, 255, .9);--bg-surface-translucent: rgba(241, 245, 249, .85);--bg-card: #ffffff;--bg-input: #f1f5f9;--border-subtle: rgba(0, 0, 0, .08);--border-medium: rgba(0, 0, 0, .14);--border-strong: rgba(0, 0, 0, .25);--border-glow: rgba(2, 132, 199, .35);--color-ai: #0369a1;--color-ai-glow: rgba(3, 105, 161, .15);--color-mobile: #be123c;--color-mobile-glow: rgba(190, 18, 60, .15);--color-hci: #6d28d9;--color-hci-glow: rgba(109, 40, 217, .15);--color-qlda: #b45309;--color-qlda-glow: rgba(180, 83, 9, .15);--text-primary: #0f172a;--text-secondary: #475569;--text-muted: #64748b;--border-subtle: rgba(15, 23, 42, .08);--border-medium: rgba(15, 23, 42, .16);--border-strong: rgba(15, 23, 42, .3);--border-glow: rgba(3, 105, 161, .35);--text-primary: #090d16;--text-secondary: #334155;--text-muted: #475569;--text-inverse: #ffffff;--text-accent: #0284c7;--text-accent: #0369a1;--color-success: #059669;--color-warning: #d97706;--color-danger: #dc2626;--color-info: #0284c7;--color-success: #047857;--color-warning: #b45309;--color-danger: #b91c1c;--color-info: #0369a1;--navbar-bg: rgba(255, 255, 255, .92);--drawer-bg: rgba(255, 255, 255, .97);--navbar-bg: rgba(255, 255, 255, .94);--drawer-bg: rgba(255, 255, 255, .98);--dropdown-bg: #ffffff;--dropdown-shadow: 0 20px 45px -8px rgba(0, 0, 0, .15), 0 0 0 1px rgba(0, 0, 0, .06);--code-bg: #1e293b;--code-header-bg: #334155;--card-footer-bg: rgba(0, 0, 0, .03);--week-body-bg: rgba(0, 0, 0, .02);--hover-overlay: rgba(0, 0, 0, .04);--active-highlight: rgba(2, 132, 199, .1);--dropdown-shadow: 0 20px 45px -8px rgba(0, 0, 0, .15), 0 0 0 1px rgba(0, 0, 0, .08);--code-bg: #0f172a;--code-header-bg: #1e293b;--card-footer-bg: rgba(15, 23, 42, .03);--week-body-bg: rgba(15, 23, 42, .02);--hover-overlay: rgba(15, 23, 42, .04);--active-highlight: rgba(3, 105, 161, .1);--bg-gradient-1: rgba(219, 234, 254, .5);--bg-gradient-2: rgba(255, 228, 230, .25);--bg-gradient-1: rgba(186, 230, 253, .4);--bg-gradient-2: rgba(254, 205, 211, .25);--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 12px -1px rgba(0, 0, 0, .08), 0 2px 6px -1px rgba(0, 0, 0, .04);--shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, .1), 0 4px 10px -2px rgba(0, 0, 0, .05);--shadow-glow-primary: 0 0 25px rgba(225, 29, 72, .12);--shadow-glow-cyan: 0 0 25px rgba(2, 132, 199, .12);--shadow-sm: 0 1px 3px 0 rgba(15, 23, 42, .08);--shadow-md: 0 4px 14px -1px rgba(15, 23, 42, .1), 0 2px 6px -1px rgba(15, 23, 42, .06);--shadow-lg: 0 10px 28px -3px rgba(15, 23, 42, .12), 0 4px 12px -2px rgba(15, 23, 42, .06);--shadow-glow-primary: 0 0 25px rgba(225, 29, 72, .15);--shadow-glow-cyan: 0 0 25px rgba(3, 105, 161, .15)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-family:var(--font-sans);background-color:var(--bg-app);color:var(--text-primary);font-size:16px;line-height:1.6;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;scroll-behavior:smooth;transition:background-color .3s ease,color .3s ease}body{min-height:100vh;display:flex;flex-direction:column;background:radial-gradient(circle at 50% 0%,var(--bg-gradient-1) 0%,transparent 60%),radial-gradient(circle at 10% 40%,var(--bg-gradient-2) 0%,transparent 40%),var(--bg-app);background-attachment:fixed;overflow-x:hidden}#root{min-height:100vh;display:flex;flex-direction:column}h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.25;color:var(--text-primary);letter-spacing:-.02em}h1{font-size:clamp(1.75rem,5vw,2.5rem)}h2{font-size:clamp(1.35rem,3.5vw,1.85rem)}h3{font-size:clamp(1.1rem,2.5vw,1.35rem)}h4{font-size:1.1rem}p{color:var(--text-secondary);margin-bottom:1rem}p:last-child{margin-bottom:0}a{color:var(--text-accent);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:#60a5fa}[data-theme=light] a:hover{color:#0369a1}code,kbd,samp,pre{font-family:var(--font-mono)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-app)}::-webkit-scrollbar-thumb{background:var(--border-medium);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--border-strong)}.container{width:100%;max-width:1280px;margin:0 auto;padding:0 1rem}.container-narrow{width:100%;max-width:900px;margin:0 auto;padding:0 1rem}.container-wide{width:100%;max-width:1440px;margin:0 auto;padding:0 1rem}@media(min-width:768px){.container,.container-narrow,.container-wide{padding:0 1.5rem}}.text-gradient-primary{background:linear-gradient(135deg,#fff,#cbd5e1,#94a3b8);-webkit-background-clip:text;-webkit-text-fill-color:transparent}[data-theme=light] .text-gradient-primary{background:linear-gradient(135deg,#0f172a,#334155,#475569);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.text-gradient-brand{background:linear-gradient(135deg,#f43f5e,#fb7185,#fda4af);-webkit-background-clip:text;-webkit-text-fill-color:transparent}[data-theme=light] .text-gradient-brand{background:linear-gradient(135deg,#be123c,#e11d48,#f43f5e);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.text-gradient-cyan{background:linear-gradient(135deg,#38bdf8,#818cf8);-webkit-background-clip:text;-webkit-text-fill-color:transparent}[data-theme=light] .text-gradient-cyan{background:linear-gradient(135deg,#0284c7,#6366f1);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.glass-panel{background:var(--bg-surface-glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border-subtle);border-radius:var(--radius-lg)}.glass-panel-elevated{background:var(--bg-surface-translucent);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid var(--border-medium);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.625rem 1.25rem;font-size:.925rem;font-weight:600;border-radius:var(--radius-md);border:1px solid transparent;cursor:pointer;transition:all var(--transition-fast);white-space:nowrap;-webkit-user-select:none;user-select:none}.btn-primary{background:linear-gradient(135deg,#ba1a1a,#e11d48);color:#fff;box-shadow:0 4px 14px #e11d4859}.btn-primary:hover{background:linear-gradient(135deg,#9f1239,#be123c);box-shadow:0 6px 20px #e11d4873;transform:translateY(-1px);color:#fff}.btn-secondary{background:var(--bg-surface-elevated);border-color:var(--border-medium);color:var(--text-primary)}.btn-secondary:hover{background:var(--bg-input);border-color:var(--border-strong);color:var(--text-primary);transform:translateY(-1px)}.btn-outline{background:transparent;border-color:var(--border-medium);color:var(--text-primary)}.btn-outline:hover{background:var(--hover-overlay);border-color:var(--border-strong)}.btn-ghost{background:transparent;color:var(--text-secondary)}.btn-ghost:hover{background:var(--hover-overlay);color:var(--text-primary)}.btn-sm{padding:.375rem .75rem;font-size:.815rem;border-radius:var(--radius-sm)}.btn-lg{padding:.875rem 1.75rem;font-size:1.05rem;border-radius:var(--radius-lg)}.badge{display:inline-flex;align-items:center;gap:.375rem;padding:.25rem .625rem;font-size:.75rem;font-weight:600;border-radius:var(--radius-full);letter-spacing:.02em;text-transform:uppercase}.badge-vku{background:#ba1a1a26;color:#f87171;border:1px solid rgba(225,29,72,.3)}.badge-ai{background:#0284c726;color:#38bdf8;border:1px solid rgba(56,189,248,.3)}.badge-mobile{background:#e11d4826;color:#fb7185;border:1px solid rgba(251,113,133,.3)}.badge-hci{background:#8b5cf626;color:#c084fc;border:1px solid rgba(192,132,252,.3)}.badge-qlda{background:#f59e0b26;color:#fbbf24;border:1px solid rgba(251,191,36,.3)}.badge-success{background:#10b98126;color:#34d399;border:1px solid rgba(52,211,153,.3)}[data-theme=light] .badge-vku{color:#be123c;background:#be123c1a;border-color:#be123c40}[data-theme=light] .badge-ai{color:#0369a1;background:#0369a11a;border-color:#0369a140}[data-theme=light] .badge-mobile{color:#be123c;background:#be123c1a;border-color:#be123c40}[data-theme=light] .badge-hci{color:#7c3aed;background:#7c3aed1a;border-color:#7c3aed40}[data-theme=light] .badge-qlda{color:#b45309;background:#b453091a;border-color:#b4530940}[data-theme=light] .badge-success{color:#059669;background:#0596691a;border-color:#05966940}.theme-toggle-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;padding:0;border-radius:var(--radius-md);background:var(--bg-surface);border:1px solid var(--border-medium);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast)}.theme-toggle-btn:hover{background:var(--bg-surface-elevated);border-color:var(--text-accent);color:var(--text-accent)}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes pulseGlow{0%,to{opacity:.6}50%{opacity:1}}.animate-fade-in{animation:fadeIn var(--transition-smooth) forwards}.navbar{position:sticky;top:0;z-index:60;background:var(--navbar-bg);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border-subtle);height:64px;display:flex;align-items:center;transition:background var(--transition-fast),border-color var(--transition-fast)}.navbar-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;width:100%}.nav-brand{display:flex;align-items:center;gap:.625rem;text-decoration:none;color:var(--text-primary);white-space:nowrap;flex-shrink:0;-webkit-user-select:none;user-select:none}.nav-brand-logo{width:32px;height:32px;border-radius:var(--radius-sm);object-fit:contain;background:var(--hover-overlay);padding:2px;border:1px solid var(--border-medium);transition:transform var(--transition-fast)}.nav-brand:hover .nav-brand-logo{transform:scale(1.05)}.nav-brand-title{display:flex;align-items:baseline;gap:.4rem;white-space:nowrap}.nav-brand-title strong{font-weight:700;font-size:1rem;letter-spacing:-.01em;color:var(--text-primary)}.nav-brand-title span{font-size:.725rem;font-weight:600;color:var(--text-accent);background:var(--active-highlight);padding:.1rem .4rem;border-radius:var(--radius-sm);border:1px solid rgba(56,189,248,.2)}[data-theme=light] .nav-brand-title span{border-color:#0284c740}.nav-menu{display:none;align-items:center;gap:.25rem;list-style:none;white-space:nowrap}@media(min-width:1025px){.nav-menu{display:flex}}.nav-link{display:inline-flex;align-items:center;gap:.35rem;padding:.45rem .75rem;font-size:.85rem;font-weight:600;color:var(--text-secondary);border-radius:var(--radius-md);transition:all var(--transition-fast);text-decoration:none;white-space:nowrap}.nav-link:hover{color:var(--text-primary);background:var(--hover-overlay)}.nav-link.active{color:var(--text-accent);background:var(--active-highlight);border:1px solid rgba(56,189,248,.25)}[data-theme=light] .nav-link.active{border-color:#0284c740}.nav-actions{display:flex;align-items:center;gap:.5rem;white-space:nowrap;flex-shrink:0}.search-trigger-btn{display:flex;align-items:center;gap:.5rem;background:var(--bg-surface);border:1px solid var(--border-medium);color:var(--text-secondary);padding:.38rem .75rem;border-radius:var(--radius-md);font-size:.8125rem;font-weight:500;cursor:pointer;white-space:nowrap;transition:all var(--transition-fast)}.search-trigger-btn:hover{background:var(--bg-surface-elevated);border-color:var(--text-accent);color:var(--text-primary)}.search-kbd{font-family:var(--font-mono);font-size:.675rem;background:var(--bg-surface-elevated);padding:.1rem .35rem;border-radius:var(--radius-sm);border:1px solid var(--border-medium);color:var(--text-muted)}.mobile-toggle-btn{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;padding:0;border-radius:var(--radius-md);background:var(--bg-surface);border:1px solid var(--border-medium);color:var(--text-primary);cursor:pointer;transition:all var(--transition-fast)}.mobile-toggle-btn:hover{background:var(--bg-surface-elevated);border-color:var(--text-accent)}@media(min-width:1025px){.mobile-toggle-btn{display:none}}.mobile-drawer-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;background:#000000a6;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);animation:fadeIn .2s ease-out}[data-theme=light] .mobile-drawer-backdrop{background:#00000059}.mobile-drawer-sheet{position:fixed;top:0;right:0;bottom:0;width:100%;max-width:380px;background:var(--drawer-bg);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border-left:1px solid var(--border-medium);box-shadow:-10px 0 35px #000000b3;display:flex;flex-direction:column;z-index:101;animation:slideDrawerLeft .25s cubic-bezier(.16,1,.3,1);overflow-y:auto}[data-theme=light] .mobile-drawer-sheet{box-shadow:-10px 0 35px #0000001f}@keyframes slideDrawerLeft{0%{transform:translate(100%)}to{transform:translate(0)}}.mobile-bottom-nav{display:flex;position:fixed;bottom:0;left:0;right:0;height:58px;background:var(--navbar-bg);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-top:1px solid var(--border-medium);z-index:55;align-items:center;justify-content:space-around;padding:0 .5rem;padding-bottom:env(safe-area-inset-bottom,0)}@media(min-width:769px){.mobile-bottom-nav{display:none}}.mobile-nav-tab{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.2rem;background:transparent;border:none;color:var(--text-muted);font-size:.675rem;font-weight:600;cursor:pointer;padding:.35rem .6rem;border-radius:var(--radius-sm);transition:all var(--transition-fast);text-decoration:none;position:relative;min-width:44px;min-height:44px}.mobile-nav-tab.active{color:var(--text-accent)}.mobile-nav-tab.active:after{content:"";position:absolute;bottom:2px;width:16px;height:2px;background:var(--text-accent);border-radius:99px;box-shadow:0 0 8px var(--text-accent)}.footer{margin-top:auto;background:var(--bg-surface);border-top:1px solid var(--border-subtle);padding:3rem 0 2rem}.footer-grid{display:grid;grid-template-columns:1fr;gap:2rem;margin-bottom:2.5rem}@media(min-width:768px){.footer-grid{grid-template-columns:1fr 1fr;gap:2.5rem}}@media(min-width:1025px){.footer-grid{grid-template-columns:2fr 1fr 1fr 1.2fr}}.footer-heading{font-size:.875rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text-primary);margin-bottom:1rem}.footer-links{list-style:none;display:flex;flex-direction:column;gap:.625rem}.footer-link{font-size:.875rem;color:var(--text-muted);transition:color var(--transition-fast);text-decoration:none}.footer-link:hover{color:var(--text-primary)}.footer-bottom{display:flex;flex-direction:column;gap:.75rem;align-items:center;text-align:center;padding-top:1.5rem;border-top:1px solid var(--border-subtle);font-size:.8125rem;color:var(--text-muted)}@media(min-width:768px){.footer-bottom{flex-direction:row;justify-content:space-between;text-align:left}}.hero-section{padding:2.5rem 0 2rem;position:relative;overflow:hidden}@media(min-width:768px){.hero-section{padding:4.5rem 0 3.5rem}}.hero-badge-container{display:flex;align-items:center;gap:.75rem;margin-bottom:1.25rem}.hero-title{font-size:clamp(1.75rem,6vw,3rem);font-weight:800;line-height:1.15;margin-bottom:1.25rem}.hero-subtitle{font-size:clamp(.95rem,2.5vw,1.15rem);line-height:1.6;color:var(--text-secondary);max-width:780px;margin-bottom:2rem}.hero-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:.75rem;margin-top:2rem}@media(min-width:768px){.hero-stats{grid-template-columns:repeat(4,1fr);gap:1rem;margin-top:2.5rem}}.stat-card{background:var(--bg-surface-glass);border:1px solid var(--border-subtle);padding:1rem;border-radius:var(--radius-lg);display:flex;flex-direction:column;gap:.25rem;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);transition:all var(--transition-normal)}@media(min-width:768px){.stat-card{padding:1.25rem}}.stat-card:hover{border-color:var(--border-glow);transform:translateY(-2px)}.stat-number{font-size:clamp(1.5rem,4vw,2rem);font-weight:800;color:var(--text-primary);line-height:1}.stat-label{font-size:.825rem;color:var(--text-muted);font-weight:500}.courses-grid{display:grid;grid-template-columns:1fr;gap:1.25rem;margin-top:2rem}@media(min-width:1025px){.courses-grid{grid-template-columns:repeat(2,1fr);gap:1.75rem}}.course-card{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-xl);overflow:hidden;display:flex;flex-direction:column;transition:all var(--transition-smooth);position:relative}.course-card:hover{border-color:var(--card-accent, var(--border-medium));box-shadow:0 12px 30px -5px #0006;transform:translateY(-4px)}[data-theme=light] .course-card:hover{box-shadow:0 12px 30px -5px #0000001a;box-shadow:0 12px 30px -5px #0f172a1f}.course-card-cover{position:relative;width:100%;height:165px;overflow:hidden;background:var(--bg-surface-elevated)}@media(min-width:768px){.course-card-cover{height:185px}}.course-card-cover img{width:100%;height:100%;object-fit:cover;object-position:center;transition:transform .45s cubic-bezier(.16,1,.3,1);display:block}.course-card:hover .course-card-cover img{transform:scale(1.06)}.course-card-cover-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(180deg,rgba(9,13,22,.15) 0%,rgba(9,13,22,.4) 60%,var(--bg-surface) 100%);pointer-events:none}[data-theme=light] .course-card-cover-overlay{background:linear-gradient(180deg,rgba(255,255,255,.1) 0%,rgba(255,255,255,.45) 60%,var(--bg-surface) 100%)}.course-card-cover-badges{position:absolute;top:.875rem;left:.875rem;right:.875rem;display:flex;align-items:center;justify-content:space-between;gap:.5rem;z-index:2}.course-card-cover-pill{display:inline-flex;align-items:center;gap:.4rem;font-family:var(--font-mono);font-size:.75rem;font-weight:700;padding:.25rem .65rem;border-radius:var(--radius-full);background:#090d16d9;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);color:#f8fafc;border:1px solid rgba(255,255,255,.25);letter-spacing:.04em}[data-theme=light] .course-card-cover-pill{background:#ffffffeb;color:#090d16;border-color:#0f172a33;box-shadow:0 2px 8px #0f172a1a}.course-card-header{padding:1.25rem 1.25rem .75rem;border-bottom:1px solid var(--border-subtle);background:linear-gradient(180deg,var(--card-glow, var(--hover-overlay)) 0%,transparent 100%)}@media(min-width:768px){.course-card-header{padding:1.75rem 1.75rem 1rem}}.course-card-meta{display:flex;align-items:center;justify-content:space-between;margin-bottom:.75rem}.course-card-code{font-family:var(--font-mono);font-size:.75rem;font-weight:700;color:var(--text-muted);letter-spacing:.05em}.course-card-title{font-size:clamp(1.15rem,3vw,1.4rem);font-weight:700;margin-bottom:.35rem;color:var(--text-primary)}.course-card-eng{font-size:.875rem;color:var(--text-secondary);font-weight:500;margin-bottom:.75rem}.course-card-body{padding:1.25rem;flex-grow:1;display:flex;flex-direction:column;gap:1.25rem}@media(min-width:768px){.course-card-body{padding:1.5rem 1.75rem}}.course-card-desc{font-size:.925rem;color:var(--text-secondary);line-height:1.6}.course-card-info-grid{display:grid;grid-template-columns:1fr;gap:.5rem;background:var(--bg-app);padding:.875rem;border-radius:var(--radius-md);border:1px solid 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.625rem;background:var(--bg-surface-elevated);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);color:var(--text-secondary)}.week-actions{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap}@media(min-width:768px){.week-actions{gap:.75rem}}.slide-viewer-modal{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;background:#05080feb;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);display:flex;flex-direction:column}[data-theme=light] .slide-viewer-modal{background:#f1f5f9f2}.slide-viewer-header{padding:.75rem 1rem;border-bottom:1px solid var(--border-subtle);display:flex;align-items:center;justify-content:space-between;background:var(--bg-surface)}@media(min-width:768px){.slide-viewer-header{padding:.875rem 1.5rem}}.slide-viewer-content{flex-grow:1;display:flex;flex-direction:column;overflow:hidden}@media(min-width:768px){.slide-viewer-content{flex-direction:row}}.slide-sidebar{display:none;width:280px;border-right:1px solid 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7rem);overflow-y:auto}}.book-chapter-link{display:flex;flex-direction:column;padding:.75rem 1rem;border-radius:var(--radius-md);color:var(--text-secondary);transition:all var(--transition-fast);cursor:pointer;border:1px solid transparent}.book-chapter-link:hover{background:var(--bg-surface-elevated);color:var(--text-primary)}.book-chapter-link.active{background:#e11d481a;border-color:#e11d484d;color:#fb7185}[data-theme=light] .book-chapter-link.active{color:#be123c}.book-content-view{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-xl);padding:1.5rem;min-height:60vh}@media(min-width:768px){.book-content-view{padding:3rem;min-height:80vh}}.search-modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;background:#05080fd9;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);display:flex;align-items:flex-start;justify-content:center;padding:5vh 1rem 0 1rem}[data-theme=light] .search-modal-backdrop{background:#0f172a66}@media(min-width:768px){.search-modal-backdrop{padding-top:10vh}}.search-modal-card{width:100%;max-width:680px;background:var(--bg-surface-elevated);border:1px solid var(--border-medium);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);overflow:hidden}.search-modal-input-wrapper{display:flex;align-items:center;gap:.875rem;padding:1rem 1.25rem;border-bottom:1px solid var(--border-medium);background:var(--bg-surface)}@media(min-width:768px){.search-modal-input-wrapper{padding:1.25rem 1.5rem}}.search-modal-input{flex-grow:1;background:transparent;border:none;font-size:1rem;color:var(--text-primary);outline:none;font-family:var(--font-sans)}@media(min-width:768px){.search-modal-input{font-size:1.15rem}}.search-modal-results{max-height:350px;overflow-y:auto;padding:.75rem;display:flex;flex-direction:column;gap:.375rem}@media(min-width:768px){.search-modal-results{max-height:450px}}.search-result-row{padding:.875rem 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1rem;background:var(--code-header-bg);border-bottom:1px solid var(--border-subtle);display:flex;align-items:center;justify-content:space-between;font-family:var(--font-mono);font-size:.75rem;color:var(--text-muted)}.code-block-pre{padding:1.25rem;overflow-x:auto;font-family:var(--font-mono);font-size:.875rem;line-height:1.7;color:#e2e8f0}.nav-dropdown{position:absolute;top:100%;left:0;width:330px;padding:.65rem;display:flex;flex-direction:column;gap:.35rem;z-index:100;margin-top:.35rem;border-radius:var(--radius-lg);background:var(--dropdown-bg);border:1px solid var(--border-medium);box-shadow:var(--dropdown-shadow)}.nav-dropdown-label{padding:.4rem .6rem;font-size:.7rem;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em}.nav-dropdown-item{display:flex;align-items:center;gap:.625rem;width:100%;padding:.55rem .75rem;border-radius:var(--radius-md);background:var(--hover-overlay);border:1px solid transparent;cursor:pointer;transition:all var(--transition-fast)}.nav-dropdown-item:hover{background:var(--active-highlight);border-color:var(--border-medium)}.nav-dropdown-item-icon{width:28px;height:28px;border-radius:var(--radius-sm);background:var(--bg-surface-elevated);display:flex;align-items:center;justify-content:center;border:1px solid var(--border-subtle);flex-shrink:0}@media(max-width:768px){body{padding-bottom:60px}}.course-detail-banner-grid{display:grid;grid-template-columns:1fr;gap:1.5rem;align-items:center}@media(min-width:960px){.course-detail-banner-grid{grid-template-columns:1fr 360px;gap:2.5rem}}.course-detail-illustration-card{border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border-medium);box-shadow:0 12px 30px -5px #00000073;background:var(--bg-surface-elevated);aspect-ratio:16 / 9;position:relative;transition:transform var(--transition-normal),box-shadow var(--transition-normal)}.course-detail-illustration-card:hover{transform:translateY(-2px);box-shadow:0 18px 38px -5px #0000008c}.course-detail-illustration-img{width:100%;height:100%;object-fit:cover;display:block}[data-theme=light] .course-card{background:#fff;border-color:#0f172a1a;box-shadow:0 4px 18px -2px #0f172a0f}[data-theme=light] .course-card:hover{box-shadow:0 16px 36px -4px #0f172a1f;border-color:var(--card-accent, rgba(15, 23, 42, .25))}[data-theme=light] .course-card-title{color:#090d16}[data-theme=light] .course-card-eng{color:#475569}[data-theme=light] .course-card-desc{color:#334155;font-weight:450}[data-theme=light] .course-card-info-grid{background:#f8fafc;border-color:#0f172a14}[data-theme=light] .course-info-item{color:#1e293b;font-weight:500}[data-theme=light] .course-info-item svg{color:#475569}[data-theme=light] .course-card-footer{background:#f8fafc;border-top-color:#0f172a14}[data-theme=light] .nav-link{color:#334155}[data-theme=light] .nav-link:hover{color:#090d16;background:#0f172a0f}[data-theme=light] .hero-subtitle{color:#334155}[data-theme=light] .week-card-title{color:#090d16}[data-theme=light] .week-card-subtitle{color:#475569}[data-theme=light] .topic-chip{background:#f1f5f9;border-color:#0f172a1f;color:#1e293b;font-weight:500}[data-theme=light] .footer-link{color:#334155}[data-theme=light] .footer-link:hover{color:#090d16}[data-theme=light] .course-detail-illustration-card{box-shadow:0 10px 25px -4px #0f172a1f;border-color:#0f172a1f}[data-theme=light] .glass-panel{background:#ffffffeb;border-color:#0f172a1a;box-shadow:0 4px 20px -2px #0f172a0d}[data-theme=light] .glass-panel-elevated{background:#fff;border-color:#0f172a1f;box-shadow:0 10px 25px -3px #0f172a14}